<template>
    <div class="header">
      <van-icon name="arrow-left" class="icon" @click="toBack" />
      <div>{{ title }}</div>
      <div class="edit" v-if="edit" @click="handleEdit">
        {{ store.state.edit ? "编辑" : "完成" }}
      </div>
    </div>
  </template>
  <script>
  import { useRouter } from "vue-router";
  import { showToast } from 'vant';
  import { useStore } from "vuex";
  export default {
    props: ["title", "edit"],
    setup() {
      const router = useRouter();
      const store = useStore();
      const toBack = () => {
        router.back();
      };
      const handleEdit = () => {
        if (store.state.cartList.length) {
          store.commit("edit");
          store.commit("changeDelete");
        } else {
          showToast.fail("请添加商品到购物车!");
        }
      };
      return {
        toBack,
        handleEdit,
        store,
      };
    },
  };

</script>

<style lang="less" scoped>
.header{
    background-color: #fff;
    height:40px ;
    font-size: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #d7d7d7;
    .edit{
        font-size: 16px;
        position: absolute;
        right: 15px;
        font-weight: normal;
    }
    .icon{
        position: absolute;
        left: 10px;
    }
}
</style>